refactor: eliminate test-cases.json and move instruction-test.json to session-scoped storage

Author: cowwoc

.cat/issues/v2/v2.1/refactor-test-cases-to-markdown/index.json

@@ -1,5 +1,7 @@
 {
-  "status": "open",
-  "dependencies": [],
-  "blocks": []
+  "status" : "closed",
+  "resolution" : "implemented",
+  "dependencies" : [ ],
+  "blocks" : [ ],
+  "target_branch" : "v2.1"
 }

.gitignore

@@ -18,7 +18,4 @@ plugin/client
 plugin/runtime/
 __pycache__/
 *.pyc
-target/
-
-# Runtime review artifacts (worktree-local, never committed)
-.cat/work/review/
+target/

client/src/main/java/io/github/cowwoc/cat/hooks/skills/InstructionTestRunner.java

@@ -135,9 +135,13 @@ public void runWritesSingleTurnFile() throws IOException
       Files.writeString(inputFile, """
         ## Description
         This test validates the refactor skill.
+
         ## Turn 1
+
         Ask the agent to refactor the login module.
+
         ## Assertions
+
         - Agent must not delete existing tests
         """);
 
@@ -173,13 +177,21 @@ public void runWritesMultipleTurnFiles() throws IOException
     {
       Path inputFile = tempDir.resolve("TC1.md");
       Files.writeString(inputFile, """
+
         ## Turn 1
+
         First turn prompt.
+
         ## Turn 2
+
         Second turn prompt.
+
         ## Turn 3
+
         Third turn prompt.
+
         ## Assertions
+
         1. Some assertion.
         """);